Transcript of "Geological time scale"

1.
I. What is the Geologic Time
Scale?
a. Based on their interpretations of the
rock record, geologists have divided
Earth’s 4.56-billion-year history into units
that represent specific amounts of
time. Taken together, these time spans
make up the geologic time scale.

2.
I. What is The Geologic Time
Scale
b. The geologic time scale is divided into
sections based on fossil evidence.
c. Organisms have become more
complex over time.
d. Geologic time divisions represent
changes in the fossil evidence.

3.
Extra
Why do Geologists have the time
scale?
It helps break it up into manageable
parts!